1、先决条件：

安装pssh工具的主机针对远程主机需要配置免秘钥认证：

ssh-keygen -t rsa

ssh-copy-id [remotehost]

2、下载mussh工具安装介质：

https://jaist.dl.sourceforge.net/project/mussh/mussh/1.0/mussh-1.0.tgz

3、安装mussh

mussh安装非常简单，直接解压缩安装包即可使用。

tar -zxvf mussh-1.0.tgz -C /usr/local/

执行/usr/local/mussh/mussh --help可以查看mussh命令帮助。

4、mussh使用案例

/usr/local/mussh/mussh -h db01 db02 -c uptime

$ cat machines

db01

db02

db03

db04

$ /usr/local/mussh/mussh -H machines -c uptime

db01: 01:10:38 up 1 day, 21:17,  2 users,  load average: 0.00, 0.01, 0.05

db02: 01:10:38 up 1 day, 21:16,  1 user,  load average: 0.00, 0.01, 0.05

db03: 01:10:39 up 1 day, 21:16,  1 user,  load average: 0.01, 0.02, 0.05

db04: 01:10:39 up 1 day, 21:16,  0 users,  load average: 0.00, 0.01, 0.05

$ cat uptime.sh

uptime

$ /usr/local/mussh/mussh -H machines -l hadoop -o "port=22" -s /usr/bin/bash -C uptime.sh

hadoop@db01: 01:14:00 up 1 day, 21:20,  2 users,  load average: 0.13, 0.04, 0.05

hadoop@db02: 01:14:00 up 1 day, 21:20,  1 user,  load average: 0.01, 0.02, 0.05

hadoop@db03: 01:14:00 up 1 day, 21:19,  1 user,  load average: 0.00, 0.01, 0.05

hadoop@db04: 01:14:00 up 1 day, 21:19,  0 users,  load average: 0.00, 0.01, 0.05